i want to build a supercharged l98 383 and want to get about 800 horsepower to compete with my friends mustang i searched and found go faststuff has an awesome deal on a rotating assembly http://cgi.ebay.com/ebaymotors/ws/eB...9720481&rd=1,1
i was thinking getting my block cleaned and notched and then assembled what would i need to get it around 800 hp such as cam heads supercharger intake i wanna go centrifugal and if its actually possible to do any of this
thanks

 

anything is possible, with the right amount of money... be sure to take into consideration supporting mods -- chassis, suspension, driveline, brakes, fuel system, injectors, tuning, cooling, etc.

 

It can definately be done, there are a very few making around the 1000 RWHP with FI LT1's. I have yet to get mine on the dyno, but I suspect it makes somewhere in the nieghborhood of 550 rwhp and it cost me about 16 thousand to put together. I have no idea what your budget is, but I would expect it to cost at least 20k maybe more to achieve the 800 rwhp range. There are tons of hidden costs that pop up during builds like this, when I started I was estimating around 8 thousand for the entire build and it ended up costing double what I expected.

 

That statement is so very true.

 

That rotating assembly is going to provide too much compression and not enough ringland thickness for the amount of boost you're going to need to run (especially if you're thinking about running on pump gas). If you're serious about making that kind of power I would highly recommend contacting one of the vendors on this board for a package deal.

 

would it be easier with a 355 or with nitrous and not a blower i want if for a street car so that i can spank everything in north jersey actually 650 700 would be good too if thats feasable

 

again, it's not too hard to make that kind of power, but when you're talking about winning races, you have to get that power to the ground. 650-800rwhp will more than likely just be good at creating smoke shows in the hands of an inexperienced driver or with a sub-optimal suspension setup.

What have you done to prepare the car for that kind of power? If nothing, expect it to be a $15-20k+ project including all the supporting mods. If you have that kind of funds, we can always help you spend the money and get you to your goal.

If you don't have that kinda cash up front, I'd suggest preparing for that power down the road by upgrading driveline and suspension parts first. You can certainly get more money for your stock parts when they are still functioning rather than throwing a bunch of power in now and replacing things as they break. That will give you more budget down the road.

A really good street combo is heads & cam plus N2O with a matched converter. Slightly higher compression with forged pistons will give you more room for spray.

 

The shorter stroke would allow your pistons to be thicker which is usually a good thing. Check out Speed Inc. They have built quite a few 800 hp combos.

 

so with the 355 at about 15 psi with all the suporting modifications what kind of power would i be looking at

 

what times does your buddies mustang run?

 

There will be a big difference between stock and aftermarket heads, auto vs. stick, and so on... 15psi on stock heads and 6 speed should make you 550rwhp give or take. 15psi on ported aftermarket heads and 6 speed will probably make you 650rwhp. Autos will generally dyno lower, but the car will likely be faster at the strip.

If you're not familiar with how this stuff works, boost is simply a measure of restriction within the engine. If you pulley 2 of the same blowers with the same size pulleys, and put them on 2 different engines: 1)stock heads 2)ported aftermarket heads ; you'll wind up with setup #1 will make more boost and less horsepower than setup #2. The reason is that setup #2 is more efficient at moving air than setup #1, making it less of a restriction on the blower's outlet.

 

im not really going for times at the track its more for street and highway and unofortionetly my car is auto its starting to look better to do a 383 with nitrous to reach the 650 goal

 

I wouldn't be upset that you have an auto. Sticks tend to lose boost in between shifts and an auto is defintely more consistant if you do go to the track.

 

yea very true when it comes to boosting an auto however i dont go to the track and im not really trying to build a track car going for more a road racing car.

 

Its is really so much more than that.